Plate boundaries - Giles

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Across
  1. 1. (two word answer put a _ between words)
  2. 6. when two plate boundaries slide past each
  3. 7. massive rigid pieces of Earth's outer shell, giant puzzles pieces of earth
  4. 8. (two word answer put a _ between words)
Down
  1. 2. (two word answer put a _ between words)
  2. 3. two word answer put a _ between words)
  3. 4. when two plate boundaries meet.
  4. 5. when two plate boundaries move apart from each other.